LIGHT IT! by Fulcrum Phorm Light Voyager Book Light, Black Focused illumination lets you read until dawn Clips to your book while delivering 10,000 hours of clean, white light Compact size--folds flat and weighs only 3.8 ounces Takes 4 AA batteries, which last between 10 and 15 hours Measures 5-1/2 by 3-1/2 by 3/4 inches